When the pressure fluctuations caused by turbulence vorticity in the boundary layer are
scattered by a sharp trailing edge, acoustic energy is generated and propagated to the far …

The ability of some species of owl to fly in effective silence is unique among birds and
provides a distinct hunting advantage, but it remains a mystery as to exactly what aspects of …

In this study, the flap and vortex generator (VG) mechanisms which were employed
separately in aircraft were used as integrated first in literature. In this mechanism, the flap …

The remarkable characteristics of the silent flight of owls provide infinite inspiration for the
low-noise operation of the rotating impeller machinery. However, how the characteristics of …

Inspired by the silent flight of the owl, the current work focuses on the reduction of trailing
edge noise using 2D finlets. Overset-Large Eddy Simulations are carried out of two …

The paper applies a wavelet filtering method based on the recursive denoising algorithm to
airfoil noise in low-Mach number flows. The pressure field around the airfoil is decomposed …

In many modern engineering fields, computational fluid dynamics (CFD) has been adopted
as a methodology to solve complex problems. CFD is becoming a key component in …

The noise emitted by small wind turbines is one of the main reasons for their poor public
perception for use in urban areas. An optimization study was performed to mitigate the …

Biologically inspired finlet treatments have been shown to effectively reduce the trailing-
edge noise of a flat plate and hence are a viable noise-suppression technology for …

This study is inspired by the velvety structures on an owl's upper wing surface. Anechoic
wind tunnel experiments were conducted to study the effect of the velvety structures on …